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author | Allan Sandfeld Jensen <allan.jensen@digia.com> | 2013-09-13 12:51:20 +0200 |
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committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-09-19 20:50:05 +0200 |
commit | d441d6f39bb846989d95bcf5caf387b42414718d (patch) | |
tree | e367e64a75991c554930278175d403c072de6bb8 /Source/JavaScriptCore/heap/CardSet.h | |
parent | 0060b2994c07842f4c59de64b5e3e430525c4b90 (diff) | |
download | qtwebkit-d441d6f39bb846989d95bcf5caf387b42414718d.tar.gz |
Import Qt5x2 branch of QtWebkit for Qt 5.2
Importing a new snapshot of webkit.
Change-Id: I2d01ad12cdc8af8cb015387641120a9d7ea5f10c
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
Diffstat (limited to 'Source/JavaScriptCore/heap/CardSet.h')
-rw-r--r-- | Source/JavaScriptCore/heap/CardSet.h | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/Source/JavaScriptCore/heap/CardSet.h b/Source/JavaScriptCore/heap/CardSet.h deleted file mode 100644 index dc44c024d..000000000 --- a/Source/JavaScriptCore/heap/CardSet.h +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright (C) 2011 Apple Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef CardSet_h -#define CardSet_h - -#include <stdint.h> -#include <wtf/Assertions.h> -#include <wtf/Noncopyable.h> - -namespace JSC { - -template <size_t cardSize, size_t blockSize> class CardSet { - WTF_MAKE_NONCOPYABLE(CardSet); - -public: - static const size_t cardCount = (blockSize + cardSize - 1) / cardSize; - - CardSet() - { - memset(m_cards, 0, cardCount); - } - - bool isCardMarkedForAtom(const void*); - void markCardForAtom(const void*); - uint8_t& cardForAtom(const void*); - bool isCardMarked(size_t); - bool testAndClear(size_t); - -private: - uint8_t m_cards[cardCount]; - COMPILE_ASSERT(!(cardSize & (cardSize - 1)), cardSet_cardSize_is_power_of_two); - COMPILE_ASSERT(!(cardCount & (cardCount - 1)), cardSet_cardCount_is_power_of_two); -}; - -template <size_t cardSize, size_t blockSize> uint8_t& CardSet<cardSize, blockSize>::cardForAtom(const void* ptr) -{ - ASSERT(ptr > this && ptr < (reinterpret_cast<char*>(this) + cardCount * cardSize)); - uintptr_t card = (reinterpret_cast<uintptr_t>(ptr) / cardSize) % cardCount; - return m_cards[card]; -} - -template <size_t cardSize, size_t blockSize> bool CardSet<cardSize, blockSize>::isCardMarkedForAtom(const void* ptr) -{ - return cardForAtom(ptr); -} - -template <size_t cardSize, size_t blockSize> void CardSet<cardSize, blockSize>::markCardForAtom(const void* ptr) -{ - cardForAtom(ptr) = 1; -} - -template <size_t cardSize, size_t blockSize> bool CardSet<cardSize, blockSize>::isCardMarked(size_t i) -{ - ASSERT(i < cardCount); - return m_cards[i]; -} - -template <size_t cardSize, size_t blockSize> bool CardSet<cardSize, blockSize>::testAndClear(size_t i) -{ - ASSERT(i < cardCount); - bool result = m_cards[i]; - m_cards[i] = 0; - return result; -} - -} - -#endif |